EXS 24 Logic Sampler Users Group

Hi Everyone -

Here's one that I can't seem to figure out -

I'm currently running Logic 4.8.1 with EXS24.  (I know - I should 
update...)  If I open Logic into a new song then I have access to my 
audio instruments and can use EXS24 with no problem.

However, if I open songs that were sequenced earlier (and under earlier 
versions of Logic) then there is no option to select an Audio 
Instrument.  There are no Audio Instruments in the Environment window.

I've tried to figure out if there's a way of importing an environment 
from an existing song, but I can't seem to figure it out.

What am I doing wrong?

Thanks!

Tim